GB1474341A - Toner concentration detector for dry powder magnetic brush toning system - Google Patents
Toner concentration detector for dry powder magnetic brush toning systemInfo
- Publication number
- GB1474341A GB1474341A GB3006475A GB3006475A GB1474341A GB 1474341 A GB1474341 A GB 1474341A GB 3006475 A GB3006475 A GB 3006475A GB 3006475 A GB3006475 A GB 3006475A GB 1474341 A GB1474341 A GB 1474341A
- Authority
- GB
- United Kingdom
- Prior art keywords
- developer
- tray
- toner
- conduit
- inch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
- G03G15/0848—Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability
- G03G15/0849—Detection or control means for the developer concentration
- G03G15/0853—Detection or control means for the developer concentration the concentration being measured by magnetic means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/489,389 US3970036A (en) | 1974-07-17 | 1974-07-17 | Toner concentration detector for dry powder magnetic brush toning system |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1474341A true GB1474341A (en) | 1977-05-25 |
Family
ID=23943651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3006475A Expired GB1474341A (en) | 1974-07-17 | 1975-07-17 | Toner concentration detector for dry powder magnetic brush toning system |
Country Status (5)
Country | Link |
---|---|
US (1) | US3970036A (de) |
JP (1) | JPS5119540A (de) |
CA (1) | CA1023790A (de) |
DE (1) | DE2525952A1 (de) |
GB (1) | GB1474341A (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2000295B (en) * | 1977-06-10 | 1982-03-10 | Basf Ag | Method and device for determining the homogeneity of a magnetic dispersion and method of manufacturing a magnetic recording medium from such a dispersion |
EP0161795A1 (de) * | 1984-05-16 | 1985-11-21 | Mita Industrial Co. Ltd. | Entwicklungsapparat |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52125339A (en) * | 1976-04-14 | 1977-10-21 | Hitachi Ltd | Detector for toner density |
JPS52131729A (en) * | 1976-04-28 | 1977-11-04 | Ricoh Co Ltd | Toner concentration detection circuit |
DE2727402C2 (de) * | 1977-06-18 | 1979-04-19 | Hoechst Ag, 6000 Frankfurt | Vorrichtung zur Messung der Tonerkonzentration eines Entwicklergemisches |
JPS6027985B2 (ja) * | 1977-11-07 | 1985-07-02 | 株式会社日立製作所 | 現像剤トナ−濃度検出装置 |
US4226524A (en) * | 1977-11-19 | 1980-10-07 | Ricoh Company, Ltd. | Magnetic brush development apparatus for an electrostatic copier |
JPS5484741A (en) * | 1977-12-19 | 1979-07-05 | Ricoh Co Ltd | Toner density controlling method and device for copier |
JPS5916935Y2 (ja) * | 1978-05-01 | 1984-05-17 | 株式会社リコー | 磁気ブラシ現像装置 |
JPS5570861A (en) * | 1978-11-22 | 1980-05-28 | Ricoh Co Ltd | Toner concentration detecting device |
JPS5643556A (en) * | 1979-09-19 | 1981-04-22 | Toshiba Corp | Concentration control device of developer |
JPS5726879A (en) * | 1980-07-23 | 1982-02-13 | Mita Ind Co Ltd | Control device for replenishing of developer |
US4468112A (en) * | 1981-02-18 | 1984-08-28 | Canon Kabushiki Kaisha | Developer concentration controlling device |
JPS584162A (ja) * | 1981-06-30 | 1983-01-11 | Mita Ind Co Ltd | トナ−補給装置 |
US4357901A (en) * | 1981-09-03 | 1982-11-09 | Bunnington Corporation | Method and system for magnetically sensing and controlling toner concentration and optical density of copies in electrostatic reproduction |
JPS5838162U (ja) * | 1981-09-09 | 1983-03-12 | 株式会社リコー | トナ−濃度検出回路 |
US4523146A (en) * | 1982-06-21 | 1985-06-11 | Champaigne Jack M | Mass flow indicator for metal particles |
US4452174A (en) * | 1982-09-30 | 1984-06-05 | Fedder Richard C | Toner concentration sensor assembly for electro-photographic apparatus |
US4524088A (en) * | 1983-01-31 | 1985-06-18 | Magnetic Technologies Corp. | Method and apparatus for controlling the thickness of developer on an applicator, such as a magnetic brush, in electrostatic reproduction |
JPS60229074A (ja) * | 1984-04-27 | 1985-11-14 | Toshiba Corp | トナ−濃度検出装置 |
US4706032A (en) * | 1986-03-17 | 1987-11-10 | Eastman Kodak Company | Toner concentration monitor |
US5166729A (en) * | 1991-08-30 | 1992-11-24 | Xerox Corporation | Toner concentration sensing apparatus |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1755103A (en) * | 1927-08-05 | 1930-04-15 | F L Smidth And Company Ltd | Apparatus for delivering regular quantities of granular or pulverized material |
US2393717A (en) * | 1944-06-16 | 1946-01-29 | David M Speaker | Electronic surgical metal body locator |
US2442805A (en) * | 1945-02-26 | 1948-06-08 | Burdick Corp | Metal locator |
US3233781A (en) * | 1963-05-08 | 1966-02-08 | Savin Business Machines Corp | Toner control system |
US3303817A (en) * | 1963-12-23 | 1967-02-14 | Xerox Corp | Xerographic developing apparatus |
US3572551A (en) * | 1969-03-27 | 1971-03-30 | Rca Corp | Apparatus for monitoring and controlling the concentration of toner in a developer mix |
US3698926A (en) * | 1969-11-11 | 1972-10-17 | Katsuragawa Denki Kk | Method and apparatus for supplementing toner in electrophotographic machines |
US3707947A (en) * | 1970-12-29 | 1973-01-02 | Xerox Corp | Cross-channel mixer |
US3828730A (en) * | 1971-05-21 | 1974-08-13 | Hitachi Metals Ltd | Electrostatic record developing apparatus |
JPS5432575B2 (de) * | 1972-05-02 | 1979-10-15 | ||
JPS5139857B2 (de) * | 1972-09-12 | 1976-10-30 |
-
1974
- 1974-07-17 US US05/489,389 patent/US3970036A/en not_active Expired - Lifetime
-
1975
- 1975-05-23 CA CA227,621A patent/CA1023790A/en not_active Expired
- 1975-06-11 DE DE19752525952 patent/DE2525952A1/de not_active Withdrawn
- 1975-06-24 JP JP50077034A patent/JPS5119540A/ja active Pending
- 1975-07-17 GB GB3006475A patent/GB1474341A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2000295B (en) * | 1977-06-10 | 1982-03-10 | Basf Ag | Method and device for determining the homogeneity of a magnetic dispersion and method of manufacturing a magnetic recording medium from such a dispersion |
EP0161795A1 (de) * | 1984-05-16 | 1985-11-21 | Mita Industrial Co. Ltd. | Entwicklungsapparat |
Also Published As
Publication number | Publication date |
---|---|
JPS5119540A (en) | 1976-02-16 |
US3970036A (en) | 1976-07-20 |
CA1023790A (en) | 1978-01-03 |
DE2525952A1 (de) | 1976-02-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |